Adding pins freezes entire mesh and corrupts the file

[midna133]

I am running Blender 2.82. I created a file, imported objs and setup modeling cloth on one of the meshes. I grabbed and moved part of the mesh. It worked as expected but too much of the mesh moved, so I added 3 pins. I tried to move the mesh again. No part of it would move. I deleted the pins. Blender now throws an error at 2 lines:

I stepped the undo history back to when I first opened the file. The error persists.
I closed (without saving) and reopened Blender and the file. The error persists.
I have tried to perform this same set of actions in both Blender 2.8.2 and 2.8.3, and there is no difference in the results.
I created a completely new file, loaded the same objs, and tried the same changes to the same mesh. Grabbing the cloth to move it worked as expected until I added pins, at which point the mesh locked completely, and upon removing the pins, the error returned as before.